01512nam 2200349 450 991013526640332120231208083633.00-7381-0563-510.1109/IEEESTD.1979.81714(CKB)3780000000092172(NjHacI)993780000000092172(EXLCZ)99378000000009217220231208d1979 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierANSI/IEEE Std 661-1979 IEEE standard method for determining objective loudness ratings of telephone connections /Institute of Electrical and Electronics EngineersPiscataway, New Jersey :IEEE,1979.1 online resource (20 pages)To describe a practical and reproducible method of determining the loudness ratings of telephone connections. Loudness ratings may be measured directly using appropriate test instruments and facilities, as specified in this standard, or may be computed using the amplitude-frequency characteristic of the connection measured in accordance with IEEE Std 269-1971.ANSI/IEEE Std 661-1979: IEEE Standard Method for Determining Objective Loudness Ratings of Telephone ConnectionsTelephone systemsTelephone systems.651.73NjHacINjHaclDOCUMENT9910135266403321ANSI2072434UNINA